/*
 * Copyright (c) 2017 Lizhaotailang
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package io.github.tonnyl.mango.util

import java.io.File

/**
 * Created by lizhaotailang on 2017/8/5.
 *
 * A collection of some usable functions.
 */

class FileUtil {

    companion object {

        // To get the size of glide cache files.
        @JvmStatic
        fun dirSize(dir: File?): Long {
            dir?.let {
                var result = 0L
                if (dir.exists()) {
                    val fileArray = dir.listFiles()
                    for (file in fileArray) {
                        result += if (file.isDirectory) {
                            dirSize(file)
                        } else {
                            file.length()
                        }
                    }
                    return result / 1024 / 1024
                }
                return 0
            } ?: run {
                return 0L
            }
        }
    }

}